Abstract
AbstractTo improve the wear resistance, toughness, and hardness of alloy, the quenching and partitioning (Q&P) technology was applied in the VC particulate (VCp) reinforced wear-resistant alloys, which were prepared by adding different Mn contents (2–5 wt%). The effects of partitioning time on the distribution of alloying elements shown by EDX mapping, retained austenite fraction, microstructure, macro-hardness, and impact toughness were investigated. The results showed that the effect of carbon partitioning time on the hard phase of the wear-resistant alloy was not significant. However, the carbon partitioning time greatly affected the microstructure and the mechanical properties of alloys, such as retained austenite, hardness, and impact toughness, and there was also a strong correlation with the Mn content. When the Mn content was lower (2.51 wt%), the retained austenite content increased with the carbon partitioning time, which resulted in decreased hardness and increased impact toughness. However, when the Mn content was higher (4.52 wt%), the opposite results occurred. This study provided an application of the Q&P technology in a VCp-reinforced wear-resistant alloy.
Highlights
Wear-resistant materials have been widely used in modern machinery manufacturing, and conventional wear-resistantThe quenching and partitioning (Q&P) technology [9,10,11,12] has been applied to improve the toughness and plasticity of medium and low carbon steels by stabilizing austenite during the martensitic transformation process
The steels treated with the Q&P technology exhibited the excellent toughness and plasticity at the room temperature condition due to the stress and impact energy being partly absorbed during martensite transformation
Two types of VC particulate (VCp)-reinforced wear-resistant alloys with different Mn contents were used to investigate the effects of Q&P heat treatment technology on the alloy performances
Summary
Wear-resistant materials have been widely used in modern machinery manufacturing, and conventional wear-resistant. The quenching and partitioning (Q&P) technology [9,10,11,12] has been applied to improve the toughness and plasticity of medium and low carbon steels by stabilizing austenite during the martensitic transformation process. This process takes place by the diffusion of carbon from supersaturated martensite obtained at the temperature ranging from Ms to Mf by quenching transformation [13,14]. The Q&P technology has become a feasible approach for improving the plasticity and toughness of the high-vanadium high-speed wear-resistant alloys. The high-vanadium high-speed steel wear-resistant alloys with different Mn contents were prepared. To provide a basis for the application of Q&P heat treatment technology in the VCp-reinforced wear-resistant alloy, the effects of Q&P technology on the microstructures, as shown by EDX mapping of alloying elements, retained austenite content, and hardness and impact toughness were investigated
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